What widget groups and applies a style to other widgets and is positioned in the first free space on the screen?

The Container Widget is specifically designed to group other widgets together and apply a consistent style across them. By functioning as a layout component, it allows developers to manage the arrangement and presentation of UI elements effectively. When placed on the screen, the Container will occupy the first available space, making it a flexible option for structuring layouts in OutSystems, especially in scenarios where responsive design is prioritized.

This functionality is essential in creating cohesive user interfaces, as it allows developers to apply styles, margins, padding, and other attributes uniformly to everything contained within it. Additionally, using a Container can streamline the process of designing complex interfaces by reducing the need for redundant styling on individual widgets.

On the other hand, the other options do not provide the same grouping or styling capabilities. The If Widget is a conditional logic element used for controlling the visibility of other widgets based on certain conditions, while Check Box and Radio Button widgets serve very specific purposes related to user input. They do not have the ability to group or apply styles to other widgets, which is a defining characteristic of the Container Widget.